#include <cerrno>
#include <cassert>
#include <unistd.h>
-#include <fcntl.h>
-#include <poll.h>
#include <boost/shared_ptr.hpp>
#include "pbd/error.h"
#include "pbd/pthread_utils.h"
+#include "pbd/timersub.h"
#include "timecode/time.h"
-#include "ardour/configuration.h"
-#include "ardour/debug.h"
-#include "ardour/audioengine.h"
-#include "ardour/session.h"
#include "ardour/audio_track.h"
+#include "ardour/audioengine.h"
+#include "ardour/debug.h"
#include "ardour/midi_track.h"
#include "ardour/midi_ui.h"
-#include "ardour/audio_diskstream.h"
+#include "ardour/session.h"
#include "ardour/slave.h"
-#include "ardour/cycles.h"
+#include "ardour/ticker.h"
#include "i18n.h"
}
void
-Session::spp_start (Parser &, framepos_t /*timestamp*/)
+Session::spp_start ()
{
if (Config->get_mmc_control ()) {
request_transport_speed (1.0);
}
void
-Session::spp_continue (Parser& ignored, framepos_t timestamp)
+Session::spp_continue ()
{
- spp_start (ignored, timestamp);
+ spp_start ();
}
void
-Session::spp_stop (Parser&, framepos_t /*timestamp*/)
+Session::spp_stop ()
{
if (Config->get_mmc_control ()) {
request_stop ();
_send_timecode_update = false;
- if (!Config->get_send_mtc() || _slave) {
+ if (_engine.freewheeling() || !Config->get_send_mtc()) {
+ return 0;
+ }
+ if (_slave && !_slave->locked()) {
return 0;
}
// Get timecode time for the given time
sample_to_timecode (t, timecode, true /* use_offset */, false /* no subframes */);
+ // sample-align outbound to rounded (no subframes) timecode
+ framepos_t mtc_tc;
+ timecode_to_sample(timecode, mtc_tc, true, false);
+ outbound_mtc_timecode_frame = mtc_tc;
+
transmitting_timecode_time = timecode;
- outbound_mtc_timecode_frame = t;
+
+ double const quarter_frame_duration = ((framecnt_t) _frames_per_timecode_frame) / 4.0;
+ if (ceil((t - mtc_tc) / quarter_frame_duration) > 0) {
+ Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
+ outbound_mtc_timecode_frame += _frames_per_timecode_frame;
+ }
+
+ DEBUG_TRACE (DEBUG::MTC, string_compose ("Full MTC TC %1\n", outbound_mtc_timecode_frame));
// I don't understand this bit yet.. [DR]
+ // I do [rg]:
+ // according to MTC spec 24, 30 drop and 30 non-drop TC, the frame-number represented by 8 quarter frames must be even.
if (((mtc_timecode_bits >> 5) != MIDI::MTC_25_FPS) && (transmitting_timecode_time.frames % 2)) {
// start MTC quarter frame transmission on an even frame
Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
outbound_mtc_timecode_frame += _frames_per_timecode_frame;
}
- // Compensate for audio latency
+#if 0 // compensate for audio latency -- disabled [rg]
+ /* this needs more thought and work.
+ * the proper solution will be to just offset MTC by the MIDI port's latency.
+ *
+ * using worst_playback_latency() is wrong when the generated MTC is used to sync
+ * clients which send audio to Ardour for recording.
+ * worst_capture_latency() vs. worst_playback_latency()
+ *
+ * NB. similarly to session_ltc, the offset should be subtracted from the timecode to send,
+ * instead of being added to timestamp when to send the timecode.
+ * Otherwise the timestamp may not fall into the jack-cycle of the current _transport frame.
+ * and no MTC QF will be sent.
+ */
outbound_mtc_timecode_frame += worst_playback_latency();
+#endif
next_quarter_frame_to_send = 0;
// Sync slave to the same Timecode time as we are on
int
Session::send_midi_time_code_for_cycle (framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
{
- if (_slave || !_send_qf_mtc || transmitting_timecode_time.negative || (next_quarter_frame_to_send < 0)) {
+ if (_engine.freewheeling() || !_send_qf_mtc || transmitting_timecode_time.negative || (next_quarter_frame_to_send < 0)) {
// cerr << "(MTC) Not sending MTC\n";
return 0;
}
+ if (_slave && !_slave->locked()) {
+ return 0;
+ }
+
+ /* MTC is max. 30 fps - assert() below will fail
+ * TODO actually limit it to 24,25,29df,30fps
+ * talk to oofus, first.
+ */
+ if (Timecode::timecode_to_frames_per_second(config.get_timecode_format()) > 30) {
+ return 0;
+ }
assert (next_quarter_frame_to_send >= 0);
assert (next_quarter_frame_to_send <= 7);
/* Duration of one quarter frame */
- framecnt_t const quarter_frame_duration = ((framecnt_t) _frames_per_timecode_frame) >> 2;
+ double const quarter_frame_duration = _frames_per_timecode_frame / 4.0;
- DEBUG_TRACE (DEBUG::MTC, string_compose ("TF %1 SF %2 NQ %3 FD %4\n", start_frame, outbound_mtc_timecode_frame,
- next_quarter_frame_to_send, quarter_frame_duration));
+ DEBUG_TRACE (DEBUG::MTC, string_compose ("TF %1 SF %2 MT %3 QF %4 QD %5\n",
+ _transport_frame, start_frame, outbound_mtc_timecode_frame,
+ next_quarter_frame_to_send, quarter_frame_duration));
- assert ((outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration)) >= _transport_frame);
+ if (rint(outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration)) < _transport_frame) {
+ send_full_time_code (_transport_frame);
+ return 0;
+ }
/* Send quarter frames for this cycle */
- while (end_frame > (outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration))) {
+ while (end_frame > rint(outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration))) {
DEBUG_TRACE (DEBUG::MTC, string_compose ("next frame to send: %1\n", next_quarter_frame_to_send));
break;
}
- const framepos_t msg_time = outbound_mtc_timecode_frame + (quarter_frame_duration * next_quarter_frame_to_send);
+ const framepos_t msg_time = rint(outbound_mtc_timecode_frame + (quarter_frame_duration * next_quarter_frame_to_send));
// This message must fall within this block or something is broken
assert (msg_time >= start_frame);
if (MIDI::Manager::instance()->mtc_output_port()->midimsg (mtc_msg, 2, out_stamp)) {
error << string_compose(_("Session: cannot send quarter-frame MTC message (%1)"), strerror (errno))
- << endmsg;
+ << endmsg;
return -1;
}
Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
// Re-calculate timing of first quarter frame
//timecode_to_sample( transmitting_timecode_time, outbound_mtc_timecode_frame, true /* use_offset */, false );
- outbound_mtc_timecode_frame += 8 * quarter_frame_duration;
+ outbound_mtc_timecode_frame += 2.0 * _frames_per_timecode_frame;
}
}
return true;
}
-/*---------------------------------------------------------------------------
- MIDI THREAD
- ---------------------------------------------------------------------------*/
+/***********************************************************************
+ OUTBOUND SYSTEM COMMON STUFF
+**********************************************************************/
+
+
+void
+Session::send_song_position_pointer (framepos_t t)
+{
+ if (midi_clock) {
+ midi_clock->position_changed (t);
+ }
+}
int
Session::start_midi_thread ()
return 0;
}
-void
-Session::terminate_midi_thread ()
-{
- if (midi_control_ui) {
- midi_control_ui->quit ();
- }
-}
-
-
projects / ardour.git / blobdiff